[quote=@Valiance]
<Snipped quote by Webmaster>

Ridge: Needs it, huh?
-Why does it need it?
[/quote]

Ask anybody who's in a high position. Existence will fall, and someone, whether it be Baphumet, Unity, or First himself, needs to fix it. None of the Systems are enough to manage everyone, so what Existence needs is a god. And Prism is not sufficient for the job; a superior being is needed instead.